Established in 1925, W.E. O’Neil Construction Company has flourished into an award winning and nationally ranked industry leader. Our foundation is rooted in our people and our commitment to quality, integrity and responsiveness to our clients’ needs. The W.E. O’Neil Construction Company family of companies is structured to benefit our clients with the stability of a strong bonding capacity and financial security and localized regional expertise. Our parent company, O’Neil Industries, is headquartered in Chicago with operating units in Chicago, Tucson (operating as T.L. Roof), Phoenix, Los Angeles, Ontario, and Denver.